Re: IV generation in cryptographic driver in AEAD

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Inline comments.

________________________________________
From: linux-crypto-owner@xxxxxxxxxxxxxxx <linux-crypto-owner@xxxxxxxxxxxxxxx> on behalf of Denis B <begun.denis@xxxxxxxxx>
Sent: Wednesday, May 18, 2016 3:06 PM
To: linux-crypto@xxxxxxxxxxxxxxx
Subject: IV generation in cryptographic driver in AEAD

Hello,

In AEAD mode (or in any case, in IPSec ESP IPv4 – esp4.c), in kernel
versions prior to 4.2 the cryptographic driver is expected to generate
an IV.

What if my driver is unable to generate an IV?
[Catalin Vasile]
Simple: You do not implement the givcrypt() primitive. The kernel will generate the IV in software and then call your encrypt() primitive.

Thanks,
Dennis.
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